165 lines
4.9 KiB
Python
165 lines
4.9 KiB
Python
# Copyright 2017 MDSLAB - University of Messina
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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__author__ = "Nicola Peditto <n.peditto@gmail.com>"
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import errno
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from fuse import FuseOSError
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import os
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# Logging conf
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from oslo_log import log as logging
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LOG = logging.getLogger(__name__)
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class FuseLib(object):
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def __init__(self, mountSource):
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self.mountSource = mountSource
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def _full_path(self, partial):
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if partial.startswith("/"):
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partial = partial[1:]
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path = os.path.join(self.mountSource, partial)
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print(path)
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return path
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# Filesystem methods
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# ==================
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def access(self, path, mode):
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full_path = self._full_path(path)
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if not os.access(full_path, mode):
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raise FuseOSError(errno.EACCES)
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def chmod(self, path, mode):
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full_path = self._full_path(path)
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return os.chmod(full_path, mode)
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def chown(self, path, uid, gid):
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full_path = self._full_path(path)
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return os.chown(full_path, uid, gid)
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def getattr(self, path, fh=None):
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full_path = self._full_path(path)
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st = os.lstat(full_path)
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attr = dict((key, getattr(st, key))
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for key in (
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'st_atime',
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'st_ctime',
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'st_gid',
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'st_mode',
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'st_mtime',
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'st_nlink',
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'st_size',
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'st_uid'
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)
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)
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return attr
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def readdir(self, path, fh):
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full_path = self._full_path(path)
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dirents = ['.', '..']
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if os.path.isdir(full_path):
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dirents.extend(os.listdir(full_path))
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for r in dirents:
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yield r
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def readlink(self, path):
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pathname = os.readlink(self._full_path(path))
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if pathname.startswith("/"):
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# Path name is absolute, sanitize it.
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return os.path.relpath(pathname, self.mountSource)
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else:
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return pathname
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def mknod(self, path, mode, dev):
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return os.mknod(self._full_path(path), mode, dev)
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def rmdir(self, path):
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full_path = self._full_path(path)
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return os.rmdir(full_path)
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def mkdir(self, path, mode):
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return os.mkdir(self._full_path(path), mode)
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def statfs(self, path):
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full_path = self._full_path(path)
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stv = os.statvfs(full_path)
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stat = dict((key, getattr(stv, key))
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for key in ('f_bavail',
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'f_bfree',
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'f_blocks',
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'f_bsize',
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'f_favail',
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'f_ffree',
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'f_files',
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'f_flag',
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'f_frsize',
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'f_namemax'
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)
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)
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return stat
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def unlink(self, path):
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return os.unlink(self._full_path(path))
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def symlink(self, name, target):
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return os.symlink(name, self._full_path(target))
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def rename(self, old, new):
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return os.rename(self._full_path(old), self._full_path(new))
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def link(self, target, name):
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return os.link(self._full_path(target), self._full_path(name))
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def utimens(self, path, times=None):
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return os.utime(self._full_path(path), times)
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# File methods
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# ============
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def open(self, path, flags):
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full_path = self._full_path(path)
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return os.open(full_path, flags)
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def create(self, path, mode, fi=None):
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full_path = self._full_path(path)
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return os.open(full_path, os.O_WRONLY | os.O_CREAT, mode)
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def read(self, path, length, offset, fh):
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os.lseek(fh, offset, os.SEEK_SET)
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return os.read(fh, length)
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def write(self, path, buf, offset, fh):
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os.lseek(fh, offset, os.SEEK_SET)
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return os.write(fh, buf)
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def truncate(self, path, length, fh=None):
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full_path = self._full_path(path)
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with open(full_path, 'r+') as f:
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f.truncate(length)
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def flush(self, path, fh):
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return os.fsync(fh)
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def release(self, path, fh):
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return os.close(fh)
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def fsync(self, path, fdatasync, fh):
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return self.flush(path, fh)
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